| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] be [prep] a | 468 |
|
| 2 | [vb past] [prep] be [prep] a | 106 |
|
| 3 | happened [prep] be [prep] [art] | 40 |
|
| 4 | happened [prep] be [prep] [art] | 40 |
|
| 5 | happen [prep] be [prep] a | 18 |
|
| 6 | happened [prep] be [prep] a | 5 |
|
| 7 | happened [prep] [be] [prep] a | 5 |
|
| 8 | happened [prep] [be] [prep] a | 5 |
|
| 9 | happened [prep] be [prep] a | 5 |
|
| 10 | happened [prep] be [prep] a | 5 |
|
